With Positive Train Control (PTC) operational, Amtrak is seeking Federal Railroad Administration (FRA) approval to remove automatic wayside signals serving as distant signals to existing interlockings ...
Washington Metropolitan Area Transit Authority (WMATA) Metrorail has implemented improvements to its automatic train control and signals program, but “is not carrying out some key safety commitments,” ...
Unfortunately, this book can't be printed from the OpenBook. If you need to print pages from this book, we recommend downloading it as a PDF. Visit NAP.edu/10766 to get more information about this ...
Systematic, well-designed, and implementable research is the most effective way to solve many problems facing state department of transportation (DOT) administrators and engineers. Often, highway ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results